Question about Hyundai ImageQuest HP4240 42 in. Plasma Television
Hello, we havent used the plasma for over a year,the red light is on,when we switch tv on, green light comes on, picture flashes for a second, then it goes back to standby, please help
We turn the plasma on the green light comes on then goes to red and the tv will not come on.
Power supply fault, really need service manual and multimeter to locate components that are causing the issue.
If it was OK when it went into storage then you may have a dry solder joint on one or more components.
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Assuming there was absolutely no action when you turned it on, this has all the classic symptoms of a bad connection. These could be cold/cracked solder joints at large components like transformers, power resistors, or connectors and connectors that need to be cleaned or reseated. By 'no action' I mean not even a tweet, bleep, or crackle from anything. To narrow it down further, if careful prodding of the circuit board(s) and various large components with a well insulated stick does not induce the set to come on, even momentarily, check the following:
This text refers to CRT tv's but thought it may be helpfull
Posted on Dec 31, 2007
SOURCE: plasma wnt stay on
I have had this problem in some models of plasma sets before. In most cases the power supply and main drive boards had to be replaced. In a small number of cases the failure was the screen itself.
In all cases, the cost of the repair was expensive. For the screen failure, the set was scrapped.
Posted on Apr 12, 2008
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